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Australia's premier 100 Mile Run - the KosciMiler takes you through the heart of the Snowy Mountains for the ultimate runner's high.

Race Category


Running Stones


Finals Access


165 KM

Elevation Gain

5000 M+

Start Date

Friday 29th November 2024

Race Start

TBC - 02:00

Max Allowed Race Time

36 Hours



Running 100 Miles is an undertaking like no other, and the KosciMiler provides the ultimate opportunity to test your mind, body and soul. Set amongst Australia’s alpine playground in the Snowy Mountains, the KosciMiler journeys through alpine meadows, snow gum forests and pastural lands, over crystal clear creeks and sparkling lakes, past granite outcrops and ski villages, and to the highest point in Australia – the summit of Mt Kosciuszko. Runnable, scenic and supported – the KosciMiler is the 100 Mile run to do in Australia.


KosciMiler FRIDAY 29 NOVEMBER 2024
ELIGIBILITY CRITERIA Completing a KosciMiler is a physically and mentally challenging event and participation in it requires significant training and preparation. For your health and safety, we require evidence of your ability to take part by meeting the eligibility criteria.
ENTRY INCLUSIONS Race entry, athlete t-shirt, finisher medal, Miler finisher gift, fully stocked checkpoints, drop bag service, on-course medical support and assistance, course photography (able to purchase during rego).
TRANSPORT Shuttle services will be available to the start line. Full details here.
MANDATORY GEAR All runners must carry mandatory gear during the race. Details are on the Mandatory Gear page.
MINIMUM AGE 18 years of age on race day
FIRST FINISHER 15hr 00min (5:00pm)
FINAL FINISHER 36 hours (2:00pm, Saturday)
TIMING RESULTS The following age divisions for both male and female will be used for race results (age on race day will be used to determine your age division): U20, 20-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85+
AWARDS & PRIZES 1st place overall male and female in KosciMiler - $1000 (AUD)
10 fastest male and females receive a trophy
5 fastest male and females receive free entry to the following year’s event.
Trophies will be awarded to 1st in each division
UTMB World Series ws100KM
The KosciMiler is a UTMB Worlds Series 100M Event. Finishers of Kosci MILER will receive 4 running stones.


From alpine meadows to snow gum forests, golden pastures to lakeside trails, crystal clear creeks and the ultimate mountain summit – the KosciMiler course was designed as the ultimate Ultra-Trail experience.

We’ve got some exciting new developments planned for the 2024 event, thanks to some newly finished trails in the area that we’re excited to take runners on, as well as taking learnings and listening to feedback from the 2023 event on what you liked and what you didn’t.

We had hoped to be in a place to be able to share these in advance of entries opening for 2024, however as is the way with events, we have to make sure we tick all the boxes before we release courses to the public, and we still have a few more boxes to tick before we can do that.

We want to be as open as we can about what you can expect for the 2024 event ahead of entries opening, so here’s what we can say for now:

  • The KosciMiler course will be of a similar nature to 2023 in terms of distance, within 8% of the category distance
  • Total elevation gain for the KosciMiler will increase by between 5-10% from 2023
  • Overall cutoff time will remain the same, and cutoff pace will remain the same as 2023.
  • The proposed courses will see a significant decrease in the amount of sealed surface used.
  • The number of Aid Stations on course will remain similar as 2023
  • The number of support crew access points for the KosciMiler will remain similar to 2023.
  • The finish line will remain at Friday Flat in Thredbo.
  • The start line will be shifting in 2024 to a new location within the Snowy Mountains area.
  • The start time is still to be confirmed but may be as early as 2am
  • We will be running shuttle buses to all start lines from Thredbo and Jindabyne – these will be available to book through your MyEvents account. All start lines will have plenty of parking for supporters.
  • The best places to book accommodation are Thredbo or Jindabyne.

Overall – the nature of vibe of the courses we’re trying to create will be the same – amazing scenery, happy trails, and ultimately a challenging but achievable event.

We are working closely with stakeholders to lock these in, and we hope to communicate these with you as soon as possible to help with your preparation and planning. Stay tuned for updates and we’ll share them with you as soon as we can!



All the information you need to know before starting an extraordinary adventure.


The KosciMiler has checkpoints along its route, with differing levels of service, support crew access and supplies. The KosciMiler checkpoints offer you the opportunity to refuel, rehydrate, see your support crew and prepare for the next leg of your journey!
Read more about checkpoints


A drop bag service will be available which allows you to have your own personal supplies (gels, food, change of socks, shoes, shorts, lubricant, etc.) available at certain check points or at the finish. Please see the time charts above for information on which checkpoints have drop bags.
Read the rules on drop bags


Every runner at Kosci will have to carry mandatory gear. The mandatory gear list contains what we believe is the absolute minimum to keep you safe during the event and in the Snowy Mountain’s unpredictable weather systems. For KosciMiler runners, your gear will need to be checked pre-race.
Read Mandatory Gear rules


The KosciMiler course is publically accessible throughout the year, offering the opportunity to train on course prior to race day. However note that many sections are covered in snow in the colder months.

Please take care and give way to members of the general public when training on course.
Read about Training & Nutrition


We love support crews almost as much as our runners at Ultra-Trail Kosciuszko by UTMB – you are always the most colourful (and loudest!) and a huge part of the magical atmosphere of the whole weekend.

You also have the very important job of getting your runners to the finish line.

First job for support crew is to read the support crew section in the Runner Guide, available one month before the event. It contains important information you will need to know for the event.

To keep the event manageable as well as fair and safe for all athletes, and to make sure support crews do not get lost, there is some information that support crews need to know.

  • Support crews are allowed to assist runners at certain checkpoints.
  • Support crews may only assist their runners within 200m either side of the checkpoints. Support Crews cannot run alongside their runners at any point on the course outside of the aid stations.

For more helpful information please visit the Transport Services page and Spectators page.



Pacers are companion runners that can accompany a KosciMiler athlete from various points. You can view pacer pickup locations in the table above. Pacers run for free but must be registered online no later than 27 November 2024. A link to register can be found on the athlete's registration confirmation email. The Pacer's role is to accompany their athlete, to provide moral support, pacing advice and companionship in the latter stages of the event.

There are strict rules regarding pacing:

  • Pacers MUST register themselves online as they will be required to sign a waiver.
  • All Pacers must wear a compulsory race bib number. Pacer(s) must attend Runner Check-in to collect their bib.
  • The minimum age for Pacers is 18 years old.
  • Pacer numbers will be light green and match the number of your athlete. This is so we know you are part of the event.
  • Pacers must carry their own set of mandatory clothing and equipment items to match that required by the KosciMiler runners.
  • Pacers cannot meet their runner before or after the designated start locations or at intermediate points. Doing so results in disqualification.
  • Competitors can use three Pacers – but only one at a time (they must change over at a checkpoint).
  • If you plan to make an exchange, you must hand over your pacer number to the next pacer.
  • Pacers are responsible for their own transport.
  • There are no Pacers for Kosci27, Kosci50 or Kosci100 runners.
  • Pacers may not carry extra water, food or equipment for runners.
  • With the exception of an emergency or medical situation, Pacers cannot provide any material or physical assistance to their athletes.